040000 tree b4be21d8216b79f3f6df16d07f7e23562dcafe1a	Darwin-gcc3
040000 tree 035f6dc588d086f97a7d84bff00aa3718620455b	Linux_x86-gcc3
040000 tree e5e6ed1885c95517b0a5ed3f5590aa0a7ade2774	Linux_x86_64-gcc3
040000 tree f1e7cf4e8eb2ef5a35b2c6ee62f228e5dc8381d8	WINNT_x86-msvc